Press



JARDINE PRESS Filed June 1 u zmsm 1922 3 Sheets-Sheet 1 Aug. 21, 1923. L465922 P. JARDINE PRESS Filed June 1, 1922 5 Sheets-Sheet 2 ii Mam s Aug. 21, 11923.

P. JARDINYE PRESS Filed June 1, 1922 3 Sheets-Sheet 5 Fetented Aug. 21, I923. 7

names stares} PETER JABDINE, .or rrnsrnnnn, onranr onnana, inssrenoaro a. B. zraaninnj Ann oorarany, Limits-n, or rrnsrnrna, onranro, canane.

'ranss. V

' A ppiieati on filed June 1,

To all whom; itmag concern:

Be it known that I,-P1rrnn JARDINE, a subject of the King of Great Britain, residing in He-speler, in the county of lVa'ter-loo, Province of Ontario,-Canada, have invented certain new and useful Improvements in Presses, of which the following is a specification. j i

My invention relates to improvements in presses, and relates more particularly to that type of press'used for various purposes in machine shops and similar places, and one of the objects of my invention 'is to rapidly relieve the pressure of the ratchet-hand wheel against the screw, so that the said wheel may be then readily turned by hand to elevate or lower the screw. Another object of my invention is to provide counterbalanced means to remove certain actuating means for the ratchet-hand wheel but of the path of movement otthis wheel at certain times and in the following specification I shall describe vmechanical embodiments of. Ineanswithin my invention to effect the ob-j jects in view, and what I claim as new will be set forth in the claims forming part of this specification.

Fig. 1 is a sideelevation Offnjf improved press. Fig. 2 is a plan view of'the operating parts. Fig. 3 is a vertical crosssection on the line 8-3, Fig. 2. Fig. l is an end elevation of the parts shown inFig. 2. Fig. 5 is a perspective view of the means used to apply power to the ratchet-hand wheel. Fig. 6 is a vertical cross-section on the line 66, Fig. 5. Fig. 7 is-a plan view of the housing used. Fig. 8 is a ve tical longitudinal section on the line 88, Fig. 7. Fig. 9 is a plan view of the lower thrust block. Fig. 10: is a cross-section on theline 10-10, Fig. 9. Fig. 11 is a perspective view of the upper thrustblOck. Fig. 12'is a plan View of a supporting 7 wheel, and Fig. 13 is a side elevation otthis clamp.

In the drawings, like characters of reference refer" to the same parts.

In machines of the character under consideration with which I am acquainted, the screw canbe readily loweredto obtain the required pressure, but no means is provided to relieve the pressure between the operating wheel and the screw in such manner that this wheel. may be readily turned by hand to elevate the screw, and the consequence is clamp for the ratchet-hand 192a seanaofees iei.

that considerable power is required to raise the screw through the medium of said wheel,

with the result that this operation requires more time to perform than is really necessary, and I have designed myniachine to overcome this disadvantage.

A'is any suitable frame for the machine, and supported between the horizontal menihere 13 thereof, by any suitable ineanssuch as screws C is the head-block D. Thish'eadblock preferably extends below the horizontal members B, and is' provided with a bore E throughout its length, through which operatesthe screw F. This screw is held from turning within thehead-block D by any suitable means, such as a key G held in the lower end of this head-block in any suitable manner, and this key extends into a keyway I-I longitudinally formed in one side of said screw. I is a housing resting against "tlie underside of the head-block D "and charmis internallythreaded' to engage with the threads of the screw F This ratchet-hand 1 wheel K is located underneath the housing I, and as the bore E is not threaded, some means must be provided-to operatively hold the screw and wheel K in relationship to the parts just described; a convenient means for this purpose is in the form of a two part bore-provided clamp2 provided with an internal annular flange 8, 'which flange e1igages in an annular groove 4; formed in the outer side, of the hub 11. After the parts of said clamp have been positioned, screws 5 are passed through holes 6 therein and through holes 7 formed in the housing I and screwedintothe lower portion of the headblock D.

8 .is the upper thrust blocir provided with a-"passage-way 9 therethrou'gh, of suiiicient size to preventthe said block coming in contact with the-screw F at any time. This screw passes through the said block, and

this block is mounted to operate in the pas- Y sage-way or chamber J formed in the housing I, andagainst the underside of the headblock I). The underside of the block 8'is shaped to provide an inclined plane 10, and

' this inclined plane rests in contact with the [the/screw F to pass therethrough, and without contacting with said block. 7 The lower V7 end of the chamber or'passag'e-way J is pretflange of course is located within the chamber or passageway J. Upon referring particularly to F 3' it will be seen that the diameter of the upper end or" the hub L is less than the diameter of the constricted passage-way or -opening M through the flange 1 and that this upper end of said hub rests in contact with the underside 01": the thrust'block 12. In the position of the parts shown in Fig. 3'

7 pressure is supposed to be exerted by the ratchet-hand wheel K against the screw F by means hereinafter more particularly described, a-nd since this pressure amounts to many tons, sometimes, it is expedientthat means be provided to remove this pressure to permit: the wheel K'to be readily turned by hand so as to elevate the screw F. Now this-pressure can only be relieved'by allowing. movementto occur between the thrust blocks 8 and 12,. and. by preferred means to be presently described these thrust blocks are unlocked when it is evident that siiice no pressure will be exerted between the hub L and the block 12, the pressure between the ratchet-hand wheel. K and the screw F will,

be relieved to permit this wheel to the readily moved by hand. 7 2

Some form of locking means to hold the blocks 8 and 12 in the position shown in Fig. 3. lhe preferred form of locking means consists of an arm 15 asso ciated with the block 8 and extending through a slot 16' formed in one end of the housing I, 17 is a clamping lever provided with a bifurcated head 18 which straddles the outer end of the arm 15, and pivoted in place by apin 19. r The inner end of this lever is provided with a. cross bar 20 which in the position of the parts shown in Fig. 3 engages with the underside of the arm 15 thus arresting the downward movement of the lever 17. The inner ends 21 of the bifurcated head of the lever'l'r' in contact with one side of the housing H, hold the upper thrust block 8 against movement to theright: obviously since. these thrust blocks are constructed, and associated, as described, the locking of the upper thrust block will simultaneously lock the lower thrust block in its: lowest position in con' tact with the hub LL Now by'moving the lever 17 upwardly around its pivot 19, the upper thrust block 8 will be unlocked, and by reason of the angular inclination of the inclined planes 10 and 11 to the horizontal,

- the pressure of the hub L against the under must be used upper thrust block '8 will'rnove to the right,

and the lower thrust block 12 "will'move inwardly longitudinally of the screw F, the

lirection ofthis latter movementbeing controlled by the annular flange or guide ld. The angular inclination of the inclined planes 10 and 11 tOll'lQ horizontal will of course be such as to permit otthesaid move-- ments required for the said thrust blocks to be automati ally efiecte'd when they are unlocked. j V

VI shall now describe the means for manu ally operating the ratchet-hand wheel K-to evelop powerz'22 is the rack siide, conven- V iently held between the horizontal members B in any suitable'mannerz for this purpose I preferably provide the upper part or said rack slide with posts 23which are loca ted. between the said members B and held there to by suitable holding. means such as screws 24. Lugs 25 are adapted to rest against the lower flanges 26 oi the-members B to co -act with the holding means 24 to holdthe rack slide 22 from movement. Of course any other convenient construction may be employed to associatesaid rack slide with the members B. 21 is the rack which operates through slots 28 formed in the ends 29 of the rack slide22, and preferably integrally formedwith said rack is a housing 30 vertically provided with apassage-way 3-1 therethrough. One side of the upper end of this housing is slotted as shown at 32, to. receive a pin 33 carried by the pawl 34whic-h operates in the passageway 31. V 'ihis pin operates longitudinally within the slot 32 to prevent the pawl 34 from having axial movement. The pawl 34 has an easy fit in the passageway 3lsothat this pawl may drop to its lowest positionby gravity.

Piv oted, between th 15133563 '7 (coupling the posts'23 together, and spaced apart, to provide a slot,) by means of the pin 36, is

a segment gear 37, the teeth 38 of which co-act with the toothed-portionl39' of the rack 27. integrally formed with one side of the segment gear37is a housing 420, pr0- jecting beyond one sidethereof, and suitably coupled to one end of this housing'is a counter-weight 41. The housing 40 is chambered as shown at 42 to receive one end of'the operating lever 43. Upon referring particularly to Figs. 1 and 2, it will be observed that the pawl at is located directly above the teeth 44 ot the wheel K: Now

ment is transmitted to. the rack 27 and hous-- ing 30 with the result that the. lower end oi the pawl 34' comes in:v contact with one of the teeth l4 and so gives the ratchet-hand wheel K movement: this operation is re peat ed asoften as desired to obtain thepressure required, and each time the lever 43 is raised of course the segment gear '37, and rack 27 and parts carried thereby, are moved into the position shown in'Fig. 5 particularly; V r

Upon referring particularly toFig. 5 it will be-seen that the lower end of the pawl 34 is cut off to providean inclined face .45, and that when this face comes in contact with the lifter plate 46 secured to one of the ends of the rack slide 22, the pawl is lifted above the top of the teeth 44.

When the lever 43 is depressed, the face 45 of the said pawl will slide over the end Y of the lifter plate 46 so that in due course the end of the pawl will be properly positioned to engage one of the teeth 44.

The lever 43 is designed to be removed from the housing 40 after the required pressure has been obtained, and the result is.

that the counter-weight 41 will automatically shift the segment gear 37 and rack 27, and since the travel of this rack is sufficient to cause the lifter plate to elevate the pawl 34 sufliciently, the end of this pawl will be out of the path of movement of the teeth 44 so as not to interfere with the movement of the wheel K.

47 is any suitable support or rest for the work, and the same is carried by the frame A in any well-known manner.

It will be abundantly clear upon referring to Figs. 1 and 2 that theposition of the lever 43 and counter-weight 41 is well v to the side of the'wheel K so that there is no possibility of conflict therewith. Ub-

viously the hand-power operating means for the wheel K may be located at either side of the screw F.

While I have described what I consider to be the best means to effect the movements set forth in the opening part of this specification, it must be understood that I do not confine myself to the construction thereof since the same may be embodied in many other forms without departing from the spirit of my invention.

What I claim is:

1. In a machine of the class described in combination, a screw; a ratchet-hand wheel having an internally threaded hub through which said screw passes; suitable supporting means for said screw and wheel, and means against which said hub thrusts in order to lower said screw, and adapted to be moved when required to relieve the pressure between said hub and said screw, for the purpose specified.

2. In a machine of the class described in combination, a screw; a ratchet-hand wheel having an internally threaded hub through which said screw passes; a bore-provided head-block through which said screw freely passes, and adapted to prevent rotation of said screw; a suitable supporting member carrying said head-block; a chambered housing positioned underneath said head-f block and through which said screw passes; suitable means adapted to support said screw and wheel, and means located within said housing and apertured to permit'said screw to pass therethrough and against which said hub thrusts and'adapted to be moved when required "to relieve the pressure between said hub and said screw, for the purpose specified.

3. In a machine of the class described in combination, a screw; a ratchet-hand wheel having an internally threaded hub throughwhich said screw passes; a boreprovided.

head-block through which said screw freely passes, and adapted to prevent rotation'of said screw; a suitable support forsaid headblock; a chambered housing positioned underneath said head-block and through which said screw passes and provided at its lower end with an annular flange; an upper thrust block provided with a'passage-way therethrough and mounted in said chambered housing and to operate against theunderside of said headblock, and having its lower face formed to provide an inclined plane;.

a lowerthrust block having a passage-way therethrough through which said screw passes and. having its upper face formed to provide an inclined plane located in said chambered housing and which rests in con-. tact with the other inclined plane, the said lower thrust block being guided by said annular flange; the inner end of said hub operating in contact with the outer faceof said lower thrust block; clamping'means v adapted to permit of the relative movements of said thrust blocks to relieve the pressure between said hub and screw, and means whereby said wheel and housing are coupled to said head-block.

4. In a machine of the class described in combination, a screw; a ratchet-hand wheel having an internally threaded hub through which said screw passes; suitable support- 7 ing means for said screw and wheel; means against which said hub thrusts in order to lower said screw, and adapted to be moved when required to relieve the pressure between said hub and said screw, and counterweighted actuating means adapted to turn said ratchet-hand wheel to :develop the said slide; a toothed rack adapted to have movement in saidrack slide and with which said gear 18 in constant mesh; a housmg'can riedaby said rack slide and provided with a longitudinal passage-way 'therethrough; a pawl mounted to operate in said passageway and located toco-act with said ratchethand wheel, when said rack is moved by said segment gearin a given direction to movesaid wheel; means for movingsaid pawl out of contact with said wheel at cer tain times, and a counter-weight associated with said seg nent gear, I for the purpose specified. I

6. in combination suitable supporting means; a ratchet-hand wheel provided with an internally threaded hub; a screw operating through said hub; means associated with said screw and wheel and carried by said supporting'means and adapted to co-actwith housing carried by said rackslide and provided with a longitudinal passageway there through; a pawl mounted to operatein sa d passageway, and located to co-act with said ratchet-hand wheel, when said rack is moved by said segment gear in a given direction to move said wheel; means for moving said pawl out of contactwith SillClWllQGl at certain times, and a counter.- veight associated with said segment gear, for the purpose specified.

PETER JARDINE 

